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Two baby otters born at Chester Zoo have been named after British Olympic medal hopefuls.
BBC: Otters at Chester Zoo named after Olympic hopefuls
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Dr Roger Wilkinson, Chester Zoo's head of field conservation and research, said it was a "momentous moment".
BBC: Chester Zoo helps Bali starling release project
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The results of the Chester Zoo study were recently published in the journal Proceedings of the National Academy of Sciences.
BBC: Hugging benefits fractious chimps
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The zoo said it believed Dubai's new cubs were the third UK litter, after a second at Chester Zoo last summer.
BBC: North African cheetahs born at Whipsnade Zoo
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One of the rarest birds in the world has been released back into the wild, with help from conservationists from Chester Zoo.
BBC: Chester Zoo helps Bali starling release project
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"There's only a 1.4% difference in genetic material between humans and chimpanzees, " Sonya Hill, a research officer at Chester Zoo, points out.
BBC: Animal behaviour in the boardroom
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Two baby giant otters - the first to be born at Chester Zoo's new breeding centre - have made their first public appearance.
BBC: The baby giant otters
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Vicky and her daughters, Cherie and Summer, along with resident male Ramon, will move to Chester Zoo while the home improvements are under way.
BBC: Orang-utans at Blackpool Zoo
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Chester Zoo spans 50 hectares but owns another 200.
BBC: Zoo's rainforest plans considered
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On Tuesday afternoon, Chester Zoo announced that a decision had been taken to postpone the trip following news at the weekend that a Nigerian Islamist militant group had killed seven foreign hostages.
BBC: Chester Zoo team on the hunt for new species in Nigeria
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"Sympathetic concern" has also been observed in gorillas, bonobos, dogs and even rooks - but it is the calming effect that it had on the Chester Zoo chimps which is said to be a new observation.
BBC: Hugging benefits fractious chimps
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The Whitley Wildlife Conservation Trust has recently been awarded a number of key grants and donations, including one from Chester Zoo to cover the cost of the expedition to discover how many of the Sulawesi crested black macaque currently live in the wild.
BBC: Devon charity to track endangered macaque